from configparser import ConfigParser
import requests
import os
import subprocess

path = os.path.dirname(os.path.abspath(__file__))
filename = path + "/generated/changed"

config = ConfigParser()
config.read(path + '/config.ini')

mailman_url = config.get('Mailman', 'url')
mailman_username = config.get('Mailman', 'username')
mailman_password = config.get('Mailman', 'password')
domain = config.get('Mailman', 'domain')

changed = int(open(filename).read())

if changed:
    for section in config.sections():
        if section not in ["Re2o", "Mailman"] and config.getboolean(section, 'activate'):
            list_name = config.get(section, "list_name", fallback=section)
            response1 = requests.get('http://{}/3.1/lists/{}@{}/roster/member'.format(mailman_url, list_name, domain), auth=(mailman_username, mailman_password))
            if "entries" in response1.json():
                entries = response1.json()['entries']
                old_emails = [entry['email'] for entry in entries]
                new_emails = open(path + "/generated/ml.{}.list".format(section)).read().split("\n")
                emails_to_delete = [email for email in old_emails if email not in new_emails]
                if emails_to_delete:
                    print("[..] Deleting non members from list {}".format(list_name))
                    response = requests.delete('http://{}/3.1/lists/{}@{}/roster/member'.format(mailman_url, list_name, domain), auth=(mailman_username,mailman_password), params={'emails': emails_to_delete})
                    print("[OK] Non members where deleted from list {}".format(list_name))
                else:
                    print("[INFO] No member to delete for list {}".format(list_name))
                emails_to_add = [email for email in new_emails if email not in old_emails]
                if emails_to_add:
                    print("[..] Adding members to list {}".format(list_name))
                    with open(path + "/tmp", "w+") as f:
                        for email in emails_to_add:
                            f.write("{}\n".format(email))
                    subprocess.call(["mailman", "members", "{}@{}".format(list_name, domain), "-a", path + "/tmp"])
                    os.remove(path + "/tmp")
                    print("[OK] Members added to list {}".format(list_name))
                else:
                    print("[INFO] No member to add to list {}".format(list_name))
            else:
                print("[..] Subscribing members to list {}".format(list_name))
                subprocess.call(["mailman", "members", "{}@{}".format(list_name, domain), "-a", path + "/generated/ml.{}.list".format(section)])
                print("[OK] List {} was regenerated".format(list_name))
    
    with open(filename, "w+") as f:
        f.write("0")
else:
    print("Files have not changed since last execution. Skipping")